Jack.



PATENTED MAIL, 10, 1908.

A. S. DEH LER. JACK. APPLICATION I'ILED 00117. 1906.

2 SHEETS-SHEET 1 a firrasmrzs A. s. DBHLER JACK. urmonmi! rum) 0M. 11. 1906.

2 SHEETS-SHEET 2.

" arrow/725 PATEIfT IED MAR. 10, 1908- 4 unrtrnn eras Arena OFFICE;

ALBERT S. DEHLER, OF MINNEAPOLIS, MINNESOTA.

men.-

Specification of Letters Patent. :Patented March 190a.

Application filed, October 17, 1905. Serial mfaaasvo.

' To all whom it may concern:

Be it known that I, ALBERT S. DEHLER,' Of Minneapolis, Hennepin county, Minnesota, have invented certain new and useful Improvements in Jacks, of which the following is a specification.

inventionrelates to devices for sup- I porting sections of gravity carriers, stagin sand platforms of various kinds and the o supports thereon at each end and adapts to be raised at'both ends simultaneously or inafter described and at one end independently of the other end.

Further, the invention consists in various constructions and combinations, all as hereparticularly pointed out in the claims.

In the accompanying'drawings, forming part ofthis'specification, Figure 1 is a front elevation of'a jack embodyi g my invention. Fig. 2 is a similar view of t e upper portion ofthe jack, showing the bar tilted to an angle from the horizontal thereof} Fig. 3 is a Fig. 4 illusside, elevation of the same. trates the jack in its folded position. Fi s. 5 and 6 are details showing the means or adjustably supporting the cross bar on the frame of the jack. Fig; 7 is a sectional view on the line a:'-x of Fig. 6.

In the drawing, 2 represents the legs of the jack made preferably of angle bar iron and connected by the cross bars 3 and'4. The frame is stren thened by-means of the diagonally arrange braces connectin the bars 3 and 4. A leg 6 is hinged at 7 on t 0' cross bar 4 preferably at a point near the middle of the same and the lower end of the leg is pivotally attached to a bar 8 that is adapted to slide in aslot 9 provided in a plate 10 secured to the lower cross bar 3, said bar 8 having'a series of notches 11 which receive the lower edge of the slot and lock the bar against lo nthe character of the ground where the device is used. One of the flanges of each of the legs 2 has a series of notches 12 arranged at intervals vertically therein-forming teeth 13.-v

Bars 14 also preferably of angle iron are arranged to slide within the angle formed by the flanges of the legs 2, and hi s 15 and .16 are formed on the lower'ends 0 the bars 14 and bent around the edges, of the flanges' of further guided by means of clips 17 secured on the cross bar 4. For the purpose of lock-.

ing the bars at any desired height latches 18.

are pivoted thereon. having outwardly turned ends 19 that are adapted to. drop into slots 20 in one of the flanges of the bars and into one'of the slots 12 of the legs and engaging a tooth 13 to lock the. bar a ainst' downward movement. The teeth 13, owever,'are inclined on their under sides so-that when the ,barsar'e raised their-latches will slip easily over the teeth withoutany attention. When it is desired to lower the bars tlielatches ma be readily disen aged from .theteeth an held out of the s ots in the bars'until lowered to the desiredlevel. I

' It will be noted that the ends 19 of these latches bear directly on the teeth 13 and consequently the pressure of the load will exert a shearing strain on theends of'the latches instead of on their pivotal connections with the bars. At the u per ends of the bars ,I provide a cross bar 21 ii tudinal slots 22 and connected with the upper ends'of the bars 14 by pivots 23 through said slots." The bar 21 referably-has upwardly' 21 is raised its pivotal connections with'the bars 24 will move in toward the ends of'the slots and will slide back and forth therein to accommodate themselves to the different positions of the bar. y

I claim as my invention 1. Ajack comprising aframe, l'e thereon and conver mg from the bottom towards the topan vertically adjustable, and a bar carried by said legs and having a. sliding pivotal connection therewith, whereby the adjustment of either end of said bar independently of the othenend is permitted.

2. A jack comprising a frame having angle bar sidegrails converging from the bottom toward the to of extension angle bars slidably mountei on said rails. and across bar aving longi e staging or plat o'nn mounted .bars and saidconnection permitting the vertical adjustment of either one of said extension bars and the corresponding elevation of either end of said cross bar independentl of the other extension bwr and the other en of said. cross bar.

3. The combination, with a frame, of a plate forming a rest for the rails of a carrier or staging, legs having a sliding, pivotal connection with said plate and an independent vertical movement on said frame, substantially as described.

4. The combination, with a frame, having upper and lower cross bars of a leg pivotally connected at one end to said upper cross bar, a bar pivotally attached to said leg and having a series of notches in its edge adapted to receive said lower cross bar and adjustably connectin the lower end of said leg with said frame, an whereby said frame may be tilted .to vary its inclination with respect to the ground, and a; plate supported on said frame and adjustable vertically thereon, substantially as described. I

5. The combination, with a frame having legs provided with a series of vertically ar- -ranged ratchet teeth, of bars vertically slidable von said frame and havi slots contiguous to said ratchet teeth an adapted to move past the same when said bars are raised or lowered, latches-pivoted on saidbars and having ends turned at an angle'to their main portions and passin through said slots and ada ted to enter t e spaces between said rate et teeth and engage said teeth and lock said bars at different elevations on said frame, and a crossplate connecting the up er ends of said bars, for the purpose specified 6. A jack comprising angle bar legs having a series of notches in their flanges formin ratchet teeth and cross bars connecting sai legs, angle bars slidably; mounted on said legs between their flanges and havin latches to enter said'notches and lock said bars, a

senses posed of angle bars and cross bars connecting the same, said angle bars having a series of ratchet teeth in one of their flan es, angle bar legs slidably mounted on sai frame and havin a series of slots therein, dogs pivoted on sai legs and having ends adaptedto enter said slotsand enga e said teeth and lock said legs at any desire elevation on said frame,

said dogs slipping over said teeth when said legs are raised, and a plate connecting the upper ends of said legs..

8. .An adjustable support for a gravity carrier section comprising a frame and means whereby it may be tilted at any desired angle with respect to the ground line, a bar mounted on said frame and whereon the gravity carrier section is placed, and said bar being vertically adjustable at both ends simultaneously or at one end independently of the I other.

support for a gravity carrier section comprising a frame and means for tilting the same at any desired angle with respect to the ground line, a bar-ada ted to form a rest for the carrier section am having uards at the ends to hold the section mp ace thereon,

said bar being vertically adjustable on said frame at either end to adap'tthedevice for ine ualities of the ground where it may be use substantially as described.

1.0. A jack comprisinga frame, extension bars slidably inounte'd thereon and capable of vertical movement, and a cross bar having a slidin pivotal connection with said extension ars, for'th'e pur ose specified.

In witness whereof, i have hereunto set my hand this 12th da of October, 1906.

- ALB RT S. DEHLER. Witnesses: RICHARD PAUL,

J. B. ERA. 

